ISSUE-106 and ISSUE-107: I18N-ISSUE-246:
Clarify character encoding

karl: we decided in prague that
this was something that implementors should be aware of but not
mandated in the specification
... we don't address in our own application, we only tested
with with UTF-8
... But this is difficult to validate a test for such an
error

<kfritsche> scribe:
kfritsche

daveL: its difficult to test and
doing a negative test
... hard to put this in an normative section

<daveL> daveL: perhaps yves
and felix can help with wording that accomodates the dificulty
in constructing a negative conformance test